Solid oxide cell and manufacturing method thereof

A manufacturing method of a solid oxide cell, comprising:

• preparing a plurality of fuel electrode members of plate shape including a central member and an outer member disposed on both sides of the central member;
• stacking and compressing the plurality of fuel electrode members;
• stacking an electrolyte member on the fuel electrode member;
• sintering the plurality of fuel electrode members and the electrolyte member to form the fuel electrode and electrolyte electrode to round an edge of the fuel electrode along a thickness direction of the fuel electrode and to have a first porosity, which is a porosity of a central layer formed of the central member, being smaller than a second porosity, which is a porosity of the outer layer formed of the outer member;
• and
• forming an air electrode on the electrolyte electrode.

A solid oxide cell comprising:

• a fuel electrode and an air electrode that face each other;
• and
• an electrolyte electrode that is disposed between the fuel electrode and the air electrode,
• wherein the fuel electrode has a plate shape, and
• a central portion of the fuel electrode is longer than a portion of the fuel electrode which is closer to the electrolyte electrode than the central portion.